如何截断UITextView内容以适应缩小的尺寸？ [英] How to truncate UITextView contents to fit a reduced size?

问题描述

我在解决这个问题时遇到了麻烦。

I'm having real trouble getting my head around this issue.

正如标题所示，我在iPhone应用程序的视图中有几个UITextView。我以编程方式创建它们并成功地用文本填充textview，但在某些情况下，我放在视图中的文本比我为其分配的帧占用更多空间。在这种情况下，我希望文本被截断，但我无法弄清楚如何去做。

As the title suggests, I have several UITextViews on a view in an iPhone application. I am programmatically creating them and successfully filling that textview with text, but in some cases the text I put in the view takes up more space than the frame I allocate for it. In this case I would like the text to be truncated, but I can't figure out how to do it.

我预先定义了以下常量;

I have predefined the following constants;

#define viewOriginX  20
#define viewOriginY 180

这是我的UITextView创建代码;

Here is my UITextView creation code;

textViewOne = [[UITextView alloc] initWithFrame:CGRectMake(viewOriginX, viewOriginY + 65, 280, 45];
textViewOne.delegate = self;
textViewOne.scrollEnabled = NO;
textViewOne.contentInset = UIEdgeInsetsZero;
textViewOne.font = viewFont;
textViewOne.textColor = [UIColor blackColor];
textViewOne.textAlignment = UITextAlignmentLeft;
[self.view addSubview:textViewOne];

在某些情况下，我在这里有15到20行文字，我想将其截断为2行。

In some cases I have 15 to 20 lines of text in here and I would like to truncate it to 2 lines.

任何人都可以帮我正确的方向吗？

Can anyone help me in the right direction?

提前致谢！：D

推荐答案

您可以做一个字符数。例如，如果你有这样的UITextField：

You can do a character count. For example, if you have UITextField like this:

+--------------------+
|This is a string in |
|a text view.        |
+--------------------+

每行有20个字符。如果您知道该号码，则可以通过 -substringToIndex：方法截断字符串。

you have something like 20 characters per line. If you know that number you can simply truncate your string by -substringToIndex: method.

int maxCharacters = 40; // change it to your max
if([myString length] > maxCharacters) {
    myString = [myString substringToIndex:maxCharacters];
}

---

你也可以考虑一下的UILabel 。由于您只需要2行文本，因此UILabel的 numberOfLines 属性可以解决您的问题。

---

You can also think about UILabel. Since you need only 2 lines of text, UILabel's numberOfLines property can solve your problem.

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